Restructuring Charges (Details Textuals) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Restructuring Charges (Textuals) [Abstract] | |||
| Restructuring charges, net of revisions | $ 329 | $ (26) | $ 411 |
| Restructuring Charges | 875 | ||
| Corporate and Other [Member] | |||
| Restructuring Charges (Textuals) [Abstract] | |||
| Restructuring charges, net of revisions | 218 | ||
| Restructuring Charges | 399 | ||
| Downsizing and Reorganizing Operations [Member] | |||
| Restructuring Charges (Textuals) [Abstract] | |||
| Restructuring charges, net of revisions | 81 | 61 | 35 |
| Employee Severance [Member] | |||
| Restructuring Charges (Textuals) [Abstract] | |||
| Restructuring charges, net of revisions | 305 | $ (33) | $ 383 |
| Employee Severance [Member] | Corporate and Other [Member] | |||
| Restructuring Charges (Textuals) [Abstract] | |||
| Restructuring Charges | $ 322 | ||